WordSearch.java

import java.io.*;
import java.util.*;

public class WordSearch {
    private char[][] board;

    public WordSearch(int rows, int cols) {
        board = new char[rows][cols];
        for (int i=0;i<rows;i++) {
            for (int j=0;j<cols;j++) {
                board[i][j]='-';
            }
        }

    }

    public WordSearch() {
        this(20,20);
    }

    public String toString() {
        String s="";
        for (int i=0;i<board.length;i++) {
            for (int j=0;j<board[i].length;j++) {
                s=s+board[i][j];
            }
            s=s+"\n";
        }
        return s;
    }

    public boolean addWordH(int row, int col, String word){
	int i = word.length();
	if (board.length - col < i)
	    return false;

	for (int j = 0; j < i; j++){
	    if (!(board[row][col + j]== word.charAt(j) || board[row][col +j]=="-".charAt(0)))
                return false;
	}

	for (int j = 0; j < i; j++)
	    board[row][col + j] = word.charAt(j);
	return true;
    }
}